松辽盆地四站—朝51区块扶余油层构造及储层特征研究
发布时间：2018-11-12 14:22
【摘要】：为提高油气田开发效益,为油田下一步的勘探开发提供理论指导,本文采用油气地质综合研究方法,对四站-朝51区块进行精细的构造解释和储层预测,并对研究区的构造及储层特征进行了研究,搞清该区扶余油层油气成藏主控因素,最终总结出成藏模式并预测有利圈闭。研究表明,断层在平面上分带性明显,基本上可以分为中部和西部两个条带,走向主要是近南北向,无论是断距规模、延伸长度以及数量上看,这类断层为本区中浅层断层的主体,在T2层及其以下(T2 T2 y2各层)这类断层尤为发育。中部四站构造区断层较发育,该区断层主要为正断层,断层走向以近南北向为主,大体呈平行状或雁列式分布。从剖面上看,隆起顶部断层发育,常形成地堑多级地堑、断面交接成鹿角状。西部朝51井区平面上主要为近南北向和东西向两组断层,主要表现为堑垒相间、“X”字型或者“Y”字型,晚期南北向断层错断早期东西向断层。四站构造在扶余油层顶面表现为一个小型的洼中隆起构造,一个被断层切割的复杂化的不规则穹隆背斜。通过地震储层反演,对扶余油层三个砂组的砂岩厚度和有效厚度进行了预测,结果表明研究区扶余油层各砂组的砂岩较发育,其中扶III组的砂岩分布范围最大,扶II组的砂岩厚度和有效厚度最大,砂岩厚度最大可达35米。在构造和砂体研究的基础上,我们对研究区的断裂对砂体的控制作用进行分析,结果表明研究区断裂对砂体的控制作用主要表现在:1、断裂交叉部位砂体较发育;2、断裂走向改变处砂体较发育;3、断裂的上盘相对下盘砂体更发育。搞清楚了目标区扶余气层的构造特征和储层特征,特别是主力气层单砂体的发育特征,为开展综合地质与气藏特征研究奠定基础,同时为开发方案设计提供尽可能可靠的基础地质资料。
[Abstract]:In order to improve the benefit of oil and gas field development and to provide theoretical guidance for the next exploration and development of oil and gas field, this paper adopts the comprehensive research method of oil and gas geology to carry out fine structural interpretation and reservoir prediction for Block Sizhou-Chao51. The structure and reservoir characteristics of the study area are studied to find out the main controlling factors of oil and gas accumulation in Fuyu reservoir and finally summarize the reservoir forming model and predict the favorable traps. The study shows that the fault has obvious zonation on the plane, which can be basically divided into two zones: central and western. The strike is mainly in the north-south direction, regardless of the scale, the extension length and the quantity of the fault. This kind of fault is the main part of the middle and shallow fault in this area, and it is especially developed in the T 2 layer and below T 2 layer (T 2 T 2y 2 layer). The faults are mainly normal faults in the four stations in the central part of China. The fault strike is mainly in the north-south direction with parallel or echelon distribution. From the section, the top fault of the uplift is developed, often forming graben? Multistage graben, cross section into antler shape. In the west of Chao51 well area, there are mainly two groups of faults in the plane, near north to south and east to west, which mainly show the interphase of graben, "X" or "Y", and the fault of the late south-north direction faults the early east-west fault. The four-station structure on the top of Fuyu reservoir is a small depression uplift structure and a complicated irregular dome anticline cut by fault. Through seismic reservoir inversion, the sandstone thickness and effective thickness of three sand formations in Fuyu reservoir are predicted. The results show that the sandstone of each sand group in Fuyu reservoir is relatively developed, and the sandstone distribution range of Fu III formation is the largest. The sandstone thickness and effective thickness of Fu II formation are the largest and the maximum sandstone thickness can reach 35 meters. Based on the study of structure and sand body, we analyze the controlling effect of fault on sand body in the study area. The results show that the controlling effect of fault on sand body in the study area is as follows: 1, the sand body in the fault cross part is relatively developed; 2, the sand body is more developed where the fault strike changes, and 3, the upper plate of the fault is more developed than the lower plate sand body. The structural and reservoir characteristics of Fuyu gas reservoir in the target area, especially the development characteristics of single sand body in the main gas reservoir, have been clarified, which will lay a foundation for the study of comprehensive geological and gas reservoir characteristics. At the same time, it provides as reliable basic geological data as possible for the development scheme design.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13
本文编号：2327363
[Abstract]:In order to improve the benefit of oil and gas field development and to provide theoretical guidance for the next exploration and development of oil and gas field, this paper adopts the comprehensive research method of oil and gas geology to carry out fine structural interpretation and reservoir prediction for Block Sizhou-Chao51. The structure and reservoir characteristics of the study area are studied to find out the main controlling factors of oil and gas accumulation in Fuyu reservoir and finally summarize the reservoir forming model and predict the favorable traps. The study shows that the fault has obvious zonation on the plane, which can be basically divided into two zones: central and western. The strike is mainly in the north-south direction, regardless of the scale, the extension length and the quantity of the fault. This kind of fault is the main part of the middle and shallow fault in this area, and it is especially developed in the T 2 layer and below T 2 layer (T 2 T 2y 2 layer). The faults are mainly normal faults in the four stations in the central part of China. The fault strike is mainly in the north-south direction with parallel or echelon distribution. From the section, the top fault of the uplift is developed, often forming graben? Multistage graben, cross section into antler shape. In the west of Chao51 well area, there are mainly two groups of faults in the plane, near north to south and east to west, which mainly show the interphase of graben, "X" or "Y", and the fault of the late south-north direction faults the early east-west fault. The four-station structure on the top of Fuyu reservoir is a small depression uplift structure and a complicated irregular dome anticline cut by fault. Through seismic reservoir inversion, the sandstone thickness and effective thickness of three sand formations in Fuyu reservoir are predicted. The results show that the sandstone of each sand group in Fuyu reservoir is relatively developed, and the sandstone distribution range of Fu III formation is the largest. The sandstone thickness and effective thickness of Fu II formation are the largest and the maximum sandstone thickness can reach 35 meters. Based on the study of structure and sand body, we analyze the controlling effect of fault on sand body in the study area. The results show that the controlling effect of fault on sand body in the study area is as follows: 1, the sand body in the fault cross part is relatively developed; 2, the sand body is more developed where the fault strike changes, and 3, the upper plate of the fault is more developed than the lower plate sand body. The structural and reservoir characteristics of Fuyu gas reservoir in the target area, especially the development characteristics of single sand body in the main gas reservoir, have been clarified, which will lay a foundation for the study of comprehensive geological and gas reservoir characteristics. At the same time, it provides as reliable basic geological data as possible for the development scheme design.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13
【参考文献】
相关期刊论文 前1条
1 孟鹏,刘立,高玉巧,曲希玉,孙晓明;大港滩海埕北断阶区沙河街组三段、二段近岸水下扇沉积微相特征[J];世界地质;2005年01期
，本文编号：2327363
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